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Citation for Study 22328

Citation title: "Taxonomic circumscription and phylogenetics of novel didymellaceous taxa with brown muriform spores".

Study name: "Taxonomic circumscription and phylogenetics of novel didymellaceous taxa with brown muriform spores".

This study is part of submission 22328 (Status: Published).

Citation

Wanasinghe D.N., Jeewon R., Persoh D., Jones E.B., Camporesi E., Bulgakov T.S., Gafforov Y., & Hyde K.D. 2018. Taxonomic circumscription and phylogenetics of novel didymellaceous taxa with brown muriform spores. Studies in Fungi, 3(1): 152-175.

Authors

• Wanasinghe D.N. (submitter) +66970637810
• Jeewon R.
• Persoh D.
• Jones E.B.
• Camporesi E.
• Bulgakov T.S.
• Gafforov Y.
• Hyde K.D.

Abstract

Sexual morph of Didymellaceous taxa are characterized by their ascomata with relatively thin peridium, cylindric-clavate to clavate, short-pedicellate or apedicellate asci, hyaline to brown, 1-septate to muriform ascospores. Its asexual morphs are coelomycetous and comprising pycnidial or acervulus conidiomata, phialidic, hyaline conidiogenous cells, hyaline or pale brown, septate or aseptate conidia. The majority of these cosmopolitan species are plant associated fungi which can be pathogens on a wide range of hosts and some species are of particular relevance for quarantine measures. Recent studies have significantly improved the taxonomy and systematics of didymellaceous taxa based on molecular phylogenetics. In contrast to the accurate and detailed studies on the asexual morphs which are common obligate pathogens, information on their usually saprobic sexual morphs is still limited. Among these phenotypically diverse species, spore characteristics are quite unique as most of them have hyaline spores with 0?1 septum while only Neomicrosphaeropsis and Didymellocamarosporium are reported as producing pigmented, muriform spores. These dematiaceous muriform spores are characteristic of a considerable number of species that may be quite divergent in other characters. During taxonomic investigations, we have isolated taxa from Alhagi pseudalhagi, Coronilla emerus, Cytisus sp., Elaeagnus angustifolia and Spartium junceum in Italy, Russia and Uzbekistan. A comprehensive phylogeny, based on four loci (ITS, LSU, rpb2 and tub2), is used to infer species relationships. Comprehensive morphological descriptions and in-depth phylogenetic investigations of five new species viz. Ascochyta coronillae-emeri, Microsphaeropsis spartii-juncei, Neomicrosphaeropsis alhagi-pseudalhagi, N. cytisicola and N. elaeagni are presented

Keywords

coelomycetous ? Italy ? multi-gene ? phylogeny ? Pleosporales ? Russia ? saprobic, taxonomic-ambiguity ? Uzbekistan

External links

• DOI: 10.5943/sif/3/1/17

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S22328
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref28173,
  	 author = {Dhanushka Nadeeshan Wanasinghe and Rajesh  JEEWON and Derek  Persoh and Evan B.G. Jones and Erio  Camporesi and Timur S. Bulgakov and Yusufjon  Gafforov and Kevin D Hyde},
  	 title = {Taxonomic circumscription and phylogenetics of novel didymellaceous taxa with brown muriform spores},
  	 year = {2018},
  	 keywords = {coelomycetous ? Italy ? multi-gene ? phylogeny ? Pleosporales ? Russia ? saprobic, taxonomic-ambiguity ? Uzbekistan},
  	 doi = {10.5943/sif/3/1/17},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Studies in Fungi},
  	 volume = {3},
  	 number = {1},
  	 pages = {152--175},
  	 abstract = {Sexual morph of Didymellaceous taxa are characterized by their ascomata with relatively thin peridium, cylindric-clavate to clavate, short-pedicellate or apedicellate asci, hyaline to brown, 1-septate to muriform ascospores. Its asexual morphs are coelomycetous and comprising pycnidial or acervulus conidiomata, phialidic, hyaline conidiogenous cells, hyaline or pale brown, septate or aseptate conidia. The majority of these cosmopolitan species are plant associated fungi which can be pathogens on a wide range of hosts and some species are of particular relevance for quarantine measures. Recent studies have significantly improved the taxonomy and systematics of didymellaceous taxa based on molecular phylogenetics. In contrast to the accurate and detailed studies on the asexual morphs which are common obligate pathogens, information on their usually saprobic sexual morphs is still limited. Among these phenotypically diverse species, spore characteristics are quite unique as most of them have hyaline spores with 0?1 septum while only Neomicrosphaeropsis and Didymellocamarosporium are reported as producing pigmented, muriform spores. These dematiaceous muriform spores are characteristic of a considerable number of species that may be quite divergent in other characters. During taxonomic investigations, we have isolated taxa from Alhagi pseudalhagi, Coronilla emerus, Cytisus sp., Elaeagnus angustifolia and Spartium junceum in Italy, Russia and Uzbekistan. A comprehensive phylogeny, based on four loci (ITS, LSU, rpb2 and tub2), is used to infer species relationships. Comprehensive morphological descriptions and in-depth phylogenetic investigations of five new species viz. Ascochyta coronillae-emeri, Microsphaeropsis spartii-juncei, Neomicrosphaeropsis alhagi-pseudalhagi, N. cytisicola and N. elaeagni are presented}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 28173
  AU  - Wanasinghe,Dhanushka Nadeeshan
  AU  - JEEWON,Rajesh 
  AU  - Persoh,Derek 
  AU  - Jones,Evan B.G.
  AU  - Camporesi,Erio 
  AU  - Bulgakov,Timur S.
  AU  - Gafforov,Yusufjon 
  AU  - Hyde,Kevin D
  T1  - Taxonomic circumscription and phylogenetics of novel didymellaceous taxa with brown muriform spores
  PY  - 2018
  KW  - coelomycetous ? Italy ? multi-gene ? phylogeny ? Pleosporales ? Russia ? saprobic
  KW  - taxonomic-ambiguity ? Uzbekistan
  UR  - http://dx.doi.org/10.5943/sif/3/1/17
  N2  - Sexual morph of Didymellaceous taxa are characterized by their ascomata with relatively thin peridium, cylindric-clavate to clavate, short-pedicellate or apedicellate asci, hyaline to brown, 1-septate to muriform ascospores. Its asexual morphs are coelomycetous and comprising pycnidial or acervulus conidiomata, phialidic, hyaline conidiogenous cells, hyaline or pale brown, septate or aseptate conidia. The majority of these cosmopolitan species are plant associated fungi which can be pathogens on a wide range of hosts and some species are of particular relevance for quarantine measures. Recent studies have significantly improved the taxonomy and systematics of didymellaceous taxa based on molecular phylogenetics. In contrast to the accurate and detailed studies on the asexual morphs which are common obligate pathogens, information on their usually saprobic sexual morphs is still limited. Among these phenotypically diverse species, spore characteristics are quite unique as most of them have hyaline spores with 0?1 septum while only Neomicrosphaeropsis and Didymellocamarosporium are reported as producing pigmented, muriform spores. These dematiaceous muriform spores are characteristic of a considerable number of species that may be quite divergent in other characters. During taxonomic investigations, we have isolated taxa from Alhagi pseudalhagi, Coronilla emerus, Cytisus sp., Elaeagnus angustifolia and Spartium junceum in Italy, Russia and Uzbekistan. A comprehensive phylogeny, based on four loci (ITS, LSU, rpb2 and tub2), is used to infer species relationships. Comprehensive morphological descriptions and in-depth phylogenetic investigations of five new species viz. Ascochyta coronillae-emeri, Microsphaeropsis spartii-juncei, Neomicrosphaeropsis alhagi-pseudalhagi, N. cytisicola and N. elaeagni are presented
  L3  - 10.5943/sif/3/1/17
  JF  - Studies in Fungi
  VL  - 3
  IS  - 1
  SP  - 152
  EP  - 175
  ER  -